Potassium Chromate

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Potassium Chromate is an inorganic chemical compound and a bright yellow crystalline solid commonly used as an oxidizing agent and pigment. It serves as a source of chromate ions in various chemical, industrial, and laboratory applications. Due to its toxic and carcinogenic nature, careful handling and strict regulatory compliance are essential. Potassium Chromate is widely used in corrosion inhibition, dyeing, and chemical synthesis processes.

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Category: SPECIALTY AND FINE CHEMICALS Tags: Analytical Reagent, Inorganic Chromate Salt, K₂CrO₄, Potassium Chromate, Yellow Chemical Compound

Description

Primary Uses
Chemical Industry
Used as an oxidizing agent in organic synthesis and analytical chemistry.

Serves as a key reagent in qualitative and quantitative chemical analyses, including detection of chloride ions.

Acts as a corrosion inhibitor in cooling systems and metal finishing baths.

Pigments and Dyes
Used in the production of yellow pigments for paints, inks, and dyes.

Employed in leather tanning to improve color fastness and durability.

Electroplating
Used in chromium plating baths to enhance plating quality and uniformity.

Serves as an additive in electroplating processes for metals.

Secondary Uses
Wood Preservation
Utilized in wood treatment formulations to prevent fungal decay and insect damage.

Photography
Employed in photographic processes as a sensitizer and in photoengraving.

Laboratory Reagent
Used as a reagent for chemical tests, including the Mohr method for chloride determination.

Textile Industry
Used in dyeing and printing textiles to improve color fixation and brightness.

PRODUCT KEY FEATURES

Basic Identification Attributes
Chemical Name (IUPAC): Potassium chromate

Common/Trade Name: Potassium Chromate

CAS Number: 7789-00-6

HS Code: 2833.11 (Chromates)

Synonyms: K₂CrO₄; chromate of potassium

Physical & Chemical Properties
Physical State: Solid, crystalline powder or granules

Color & Odor: Bright yellow; odorless

Solubility: Highly soluble in water (about 57 g/100 mL at 20°C)

Melting Point: 975°C (decomposes)

Density: ~2.7 g/cm³

Stability: Stable under normal conditions; strong oxidizer

Safety & Hazard Attributes
GHS Classification: Carcinogenic (Category 1B), Mutagenic (Category 2), Toxic to aquatic life

Toxicity: Highly toxic and carcinogenic; harmful if inhaled, ingested, or absorbed through skin

Exposure Limits: Strict limits; avoid any exposure; use in well-ventilated environments with protective equipment

Storage & Handling Attributes
Storage Conditions: Store in tightly sealed containers, in a cool, dry, and well-ventilated area away from incompatible materials

Container Type: Glass or plastic containers resistant to strong oxidizers

Shelf Life: Typically 1–3 years if stored properly

Handling Precautions: Use full PPE including gloves, respirators, and protective clothing; avoid dust generation and skin contact

Regulatory & Compliance Attributes
Complies with hazardous chemical regulations including OSHA, REACH, and local environmental laws

Classified as a hazardous substance requiring specialized transport and storage

Environmental & Health Impact
Biodegradability: Not biodegradable

Ecotoxicity: Extremely toxic to aquatic organisms; avoid environmental release

Bioaccumulation: Potential for bioaccumulation in aquatic organisms

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions
PPE Required: Full protective gloves, goggles, respirators, and protective clothing mandatory

Handling Guidelines: Handle in fume hoods or well-ventilated areas; prevent dust formation; do not inhale or ingest

Storage Measures: Store securely to prevent leaks and spills; isolate from reducing agents and organic materials